\begin{tikzpicture}
	\tkzDefPoints{0/0/D, 1/0/O, 2/0/E}
	\tkzDrawLines[add=0.2 and 0.2](D,E)
	\tkzDrawPoints[fill=black](D,O,E)
	\tkzLabelPoints[above](D,O,E)
\end{tikzpicture}

